.rain-button{
  outline-style: none;
  border: none;
  position: relative;
  display: inline-block;
  height: 44px;
  width: 100px;
  margin: 0;
  padding: 0;
  font-size: 14px;
  line-height: 1.2;
  text-align: center;
  background-color: #ffffff;
  border: 1px solid #e3e3e3;
}
.rain-button--info{
  background-color: #1989fa;
  color: #ffffff;
  border: none;
}
.rain-button--primary{
  background-color: #07c160;
  color: #ffffff;
  border: none;
}
.rain-button--warning{
  background-color: #ee0a24;
  color: #ffffff;
  border: none;
}
.rain-button--danger{
  background-color: #ff976a;
  color: #ffffff;
  border: none;
}
.rain-button--big{
  height: 44px*1.2;
  width: 100px*1.2;
}
.rain-button--small{
  height: 44px*0.8;
  width: 100px*0.8;
}
.rain-button__content{
  button:before{
    border: 1px solid red;
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    height: 100%; 
 }
}